: STS 2008 not cranking

08-09-12, 12:52 PM
Cadillac sts 2008 not cranking l . All accessories working .
All fuses and relays are fine .
Have tried jump starting the car but no luck
Currently the dic display says 'service theft system'
Today , after putting a 80 amp battery .The car did start once but was misfiring and the Dic display showed 'reduced engine Power ' and the check enigne light was
steadily on.
So i turned off the car and then tried starting it after 5 minutes but it didn't crank
Also replaced the key battery